diff --git a/workers/dockerfilebuild.py b/workers/dockerfilebuild.py
index 744057574..b9d2a97a7 100644
--- a/workers/dockerfilebuild.py
+++ b/workers/dockerfilebuild.py
@@ -328,7 +328,7 @@ class DockerfileBuildWorker(Worker):
 
     # Save the zip file to temp somewhere
     with TemporaryFile() as zip_file:
-      zip_file.write(request_file.raw)
+      zip_file.write(request_file.content)
       to_extract = ZipFile(zip_file)
       to_extract.extractall(build_dir)